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Wirewound 1 / 2W fuse wire resistance manufacturers_resistenza fusibile

Wirewound 1 / 2W fuse wire resistance
Order Hotline:0769-83811196
(A), the product features
The product anti-surge performance,Fuse consistency is good, small size, easy to install,Safe and reliable,Widely used in electric light source,Switching power supply,Chargers and household appliances and other electronic equipment.

(B), Dimensions

 
Color ring resistance fuse
Model number rated power
W
Dimensions (mm) Paint the root length *(mm)
Dmax Lmax H±1 d±0.05
RXF 0.25、0.5S 3.0 7.0 60~70 0.38~0.45 ≤1
0.5、1S 4.0 11 60~95 0.43~0.60 ≤1.5
1、2S 5.0 12 60~70 0.54~0.72
2、3S 6.0 16 60~80 0.60~0.72
 
(C), the technical note
General data
1, the nominal resistance to allow deviation: ± 5%, ± 10%
2, climate categories: 55/155/21
3, low pressure: 8.5kpa
4, stability level: 5%
5, the resistance change limit:
5.1 Long-term test: ± (5% R + 0.1Ω)
5.2 Short-term test: ± (1% R + 0.05Ω)
6, the temperature coefficient: ± 350 * 10-6 / ℃
7, rated current: I2 (A) = P (W) / R (Ω)
8, lower power curve shown in Figure 2:

Fuse resistance manufacturers
Note: The rated power is the maximum temperature at 70 ℃ continuous operation,More than 70 ℃ when the curve by power consumption.
9, fusing characteristics
    Definition: When a specified overload is applied to the resistor,Resistance significantly increased;So that the current flowing through the resistor to the initial experimental current of less than 1/50 is called fuse.The time required for a resistor from a specified overload to a blow-out time is called the blow-out time.This performance is known as fusing.

 Requirements: Under the specified current overload rating overload conditions, Fusing time should meet the following table;

  table 3

 
Rated current magnification (times) Fusing time(S)
0.25W R<1Ω:6    R≥1Ω:8 ≤30
0.5~3W R<1Ω:5    R≥1Ω:6 ≤30
Note: The fuse time can be made according to user requirements
 
10, impact resistance
       Close the switch K according to Fig. 3,Open the switch K2, according to 1S-1S off requirements,K1 will be repeated on-off 30 times,The test resistance shall not be open.

      Fuse resistance
 
11, surge impact (Surge) characteristics
Test conditions: in accordance with IEC61000-4-5 test standards,Specifically for the output termination of the corresponding load,Applying a surge voltage,Waveform: 1.2 / 50us 8 / 20us combined wave;Coupling: L-N, L N-PE, L-PE, N-PE according to the requirements of choice;Polarity: positive and negative;The phase angle is: 0 °, 90 °, 180 °, 270 °, the number of surges 5 times, the interval time is 60S.

   Test standard: After the test, the test resistance should not open.

12, the main pilot project, Test methods and performance requirements (In the absence of special instructions, are in the standard test under atmospheric conditions)
 
          
 
Serial number
Test project
Test method
Performance requirements
1
Resistance
Resistance sorting instrument measurement error。
Resistance value at nominal resistance and
The allowable deviation range。
2
Short term load
Rated voltage, resistor applied 2.5 times for 5S, 1 ~ 2H after recovery of the resistance measurement, and calculate the resistance change rate 。
The resistance change:
△R≤±(2%R+0.05Ω)
3
Weldability
Slot welding method, the resistor terminations immersion(260±5)℃
The solder pot, the insertion depth distance element body2-0.5 mm
For 2± 0.5S, remove the observed solder coverage area。
Be immersed in the peripheral part of the direction of the surface 90% coverage。
4
High voltage
The resistor is placed in metal “ V” grooves, insulation voltage regulation, voltage and resistance in the two wire and &ldquo together; V” groove between 60S, continued。
No breakdown, arcing
5
Resistance to soldering heat
Before the experiment measuring resistance, the resistor terminations immersion350±10℃The solder pot, continued 3.5±0.5 S After recovery,1hAfter measuring, calculating the resistance change rate。
The resistance change:
△R≤±(1%R+0.05Ω)
6
Rapid temperature changes
According to the low temperature:-55±3℃,Time: 30 minutes, normal temperature, time2-3Minutes, high temperature 155± 3 ℃ , time: 30 minutes at room temperature, time, style= "2-3 minutes, this is a cycle, do 5 cycles, restore the 1-2h after measuring and calculating the resistance change rate
 
The resistance change:
△R≤±(1%R+0.05Ω)
7
Durability
The resistor is placed in the constant temperature box (70± 3) ℃, input rated DC voltage, 1.5h, 0.5h fault, so the cycle of 1000h, 1&mdash recovery after removing; after 4h, the resistance measurement, calculation of resistance change rate. The paperspan>
The resistance change:
△R≤±(5%R+0.1Ω)
 
8
Terminal strength
Pull: with 10N it continued to pull 10S; bending:In the end with5NLoad, the resistor body (2-3 "FONT-SIZE: 12pt") S in 90° after recovery, the other direction bending, namely bending 2 time.
The resistance change:
△R≤±(1%R+0.05Ω)。
 
9
Vibration
The resistor body and installation point distance of 6± 1mm, vibration rate range of 10-500HZ,: 0.75mm "FONT-SIZE: 12pt 98m/s2 "FONT-SIZE: 12pt" > the lesser of ; vibration direction and time along the Z "FONT-SIZE: 12pt", XY axis 2h "FONT-SIZE: 12pt, , cycle:1min;
(10-55-10HZ),Resistance measurement test, and calculate the resistance change rate。
1)Appearance: no mechanical damage
(2)The resistance change:
△R≤±(1%R+0.05Ω)
 
10
Climate sequence
-Dry   cyclic damp heat test, Db, the first cycle cold;   low pressure   cyclic damp heat test cycle, Db, DC load the rest
The resistance change:
△R≤±(5%R+0.1Ω)
11
The resistance change
The test samples were installed in the 25± 3mm, applying 5 "FONT-SIZE: 12pt", 10 "FONT-SIZE: 12pt", 16 rated power consumption load, duration of 5min< span style= "FONT-SIZE: 12pt" > or to the resistor into open check。
The screen cylinder misfire
13、Braid type and size as shown in Figure 4, table5:

Resistance fuse
Taping Specifications Dimensions  (㎜)
U W P L1-L2 T Z R t S
T26 38±1 26±0.5 5±0.5 <0.5 6±0.1 ≤1 0 ≥3.2 <0.8
T52 64±2 52±1 <1
T63 75±2 63±1 ≤1,2
75±2 63±1 10±0.5
T72 84±2 72±2 5±0.5 <1.2
84±2 72±2 10±0.5
 
14, casing product style and size shown in Figure 5, Table 6
fuse resistance values
Shape Dimensions  (㎜)
H±1 H1±1.5 H2±1.5 h≤ h (1±5%) h1±2 h2±2
TA type 70 20 20 50 10 10
TB type 80 5 25 40 10 30
Note: 1, the exposed parts of the wire ≤ 5 mm, the tolerance is +2 / -1 mm,
2, casing size can be made according to customer requirements
15、Forming and dimension drawing
fuse wire metal
Shape
Size(㎜)
P±0.5 H±1 h±1
Note:
Shape and size can be produced according to customer requirements
n Type 5 4  
10 4  
B Type 5   4.5
10   4.5
L Type 10 4.5  
12 4.5  
 
16、Specification name specification (cases)

Wirewound Resistor Fuse
 
17、Resistance color ring logo map
Wirewound fuse resistance
 

Color
Color
First digital
First digit
Second digitalSecond digit
Third digital
Third digit
Multiplier
Malutiplier
Error rateTolerance
BlackBlack
0
0
0
100
BrownBrown
1
1
1
101
±1
红Red
2
2
2
102
±2
OrangeOrange
3
3
3
103
HuangYellow
4
4
4
104
GreenGreen
5
5
5
105
±0.5
BlueBlue
6
6
6
106
±0.25
PurpleViolet
7
7
7
107
±0.1
AshGray
8
8
8
108
白White
9
9
9
109
Gold Gold
10-1
±5
SilverSilver
10-2
±10
no Plain
±20





















Product description
● product introduction: fuse resistor (also called insurance resistor, Wirewound resistors, Wirewound resistors, fuse resistance), is a new type of special element has a dual role of resistor and fuse. It with the letter &ldquo in the circuit; RF” or “ R”
representation. 
● Rated power: 1/4W, 1/2WS, 1/2W, 1WS, 1W, 2WS, 2W, 3WS etc
.
● withstand voltage: 350V
● resistance range: 0.1Ω ~510Ω. 
● error: ± 1%~± 5%
 
certification: UL/VDE/CQC certification 
The product features:
1, is the best choice for small power low cost scheme.
2, can satisfy the anti surge current shock and anti lightning requirements.
Heat dissipation capability of
3, strong, low temperature coefficient, high pressure resistance, insulation, flame retardant, explosion proof, long life.
 

Relevant Information

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Dongguan YaXun Electronic Hardware Product Co., Ltd.

Tel: 0769-83811196

Mobile: 13827205356

Fax: 0769-86831418

SKPYE: yaxun88

Address: Changping Town, Dongguan City, Bridge Lek Industrial Zone 15

Hong Kong Ya Trading Company

Tel:(852) 31178999

Mobile: 13827205356

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